Should the point where the fingerboard and nut intersect form a nearly perfect 90 degree angle? Not withstanding the curvature in the fingerboard to provide for the "scoop", it would seem that if the fingerboard is on a horizontal plane, then the edge of the nut where it joins the fingerboard should be on a vertical plane. When I pinch my strings to the fingerboard about 1 inch from the nut and also just below the neck body joint, I can see a uniform concave "scoop" with the string being approximately 2 mm above the fingerboard in the center between the pinch points. However, when I move the nut end pinch point toward the nut, this 2 mm gap quickly becomes 4 mm. It is as if my fingerboard wasn't planed with the same "scoop" contour on the final/top inch of the fingerboard as on the remainder of the board. The rate of change of the "scoop" contour is much greater in the final inch of the finger board at the nut end. After reading a number of posts on this and other forums, my initial conclusion is the bottom of the nut grooves should be on the same relative plane as the fingerboard at the intersection, with the fingerboard being approximately 2 business cards lower or offset from the nut grooves. Is this correct or do I have a distorted image of this relationship and/or the fingerboard profile?